bonitron M3460R, Customer Reference Manual

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Doc.# 993014
07/25/2000
3.2.9 (RTR) Ride-Thru Ready LED
The green Ride-Thru Ready LED is ON if the module is fully operational and capable of regulating the
rated DC bus voltage under the specified power dip conditions.
3.2.10 (RTA) Ride-Thru Active LED
The red Ride-Thru Active LED is ON if the module is regulating the DC bus voltage under an input line
dip condition.
3.2.11 AC Voltage Dip LED
The red AC Voltage Dip LED is ON if the AC line has dipped below the AC voltage dip setpoint or if any
single phase is missing.
3.2.12 Heatsink Over Temperature LED
The red Heatsink Overtemp LED is ON if the backplate temperature exceeds 130
°
F.
3.3 Rack Power
CAUTION!
High Voltages supplied to the rack include the input AC power (460VAC) and DC Bus (640VDC
nominal). These voltages are supplied from different sources; each must be separately
disconnected and verified zero potential before servicing. Additionally, the Ride-Thru DC bus
retains a hazardous voltage for several minutes after the input power has been disconnected.
After throwing the disconnect, wait at least five minutes to allow the DC bus to discharge; then
verify zero potential before servicing. Failure to observe these precautions could result in severe
bodily injury or loss of life.
Please refer to the appropriate Customer Connections & Component ID drawing and doc.# 993004
Recommended Input Power Wiring Sizes And Power Source Fusing For Model M3460R Cabinet Mounted
Ride-Thru Systems for additional information pertaining to this section.
Customer power wiring connections to the 3-phase AC line and DC bus are provided at the upper left of the
rack back panel. The 3-phase AC and DC bus breakers are mechanically interconnected and are operated
by the door-mounted actuator. If 120VAC is applied to the shunt trip coil, both AC and DC breakers will be
tripped. Auxiliary contacts provide indication of the breaker status. The door-mounted actuator must be
cycled to restore operation.
3.4 Status and Control Signals
All Logic level Ride-Thru status and control signals connections are provided on connector TS2 of the
4460C1 Ride-Thru Controller board. A single dry contact for Ride Thru status is provided on connector
TS2 of the 3460M1 Fault Multiplex Interface board. The 3460M1 Fault Mux board combines the major
logic level status signals, and provides a single fault contact. Refer to the appropriate “Customer
Connections & Component ID” drawing for terminal locations.
3.4.1 Run Signal Input
The Ride-Thru section requires a CLOSED contact or jumper across terminals 9 and 10 of 4460C1-TS2
connector to allow operation of the control circuitry. When this contact is closed, normal operation of the
Ride-Thru module is enabled. If the contact is open, the DC bus will precharge, but the control board will
not be enabled to monitor the bus, and Precharge Complete won't occur.